package com.erms.dao;

import java.util.List;
import org.hibernate.LockMode;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.erms.bean.Courseware;

/**
 * A data access object (DAO) providing persistence and search support for
 * Courseware entities.
 * Transaction control of the save(), update() and delete() operations
 * can directly support Spring container-managed transactions or they can be
 * augmented to handle user-managed Spring transactions.
 * Each of these methods provides additional information for how to configure it
 * for the desired type of transaction control.
 * 
 * @see com.erms.bean.Courseware
 * @author MyEclipse Persistence Tools
 */
public class CoursewareDAO extends HibernateDaoSupport {
	private static final Logger	log	= LoggerFactory
											.getLogger(CoursewareDAO.class);

	// property constants

	protected void initDao() {

		// do nothing
	}

	public void save(Courseware transientInstance) {

		log.debug("saving Courseware instance");
		try {
			getHibernateTemplate().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

	public void delete(Courseware persistentInstance) {

		log.debug("deleting Courseware instance");
		try {
			getHibernateTemplate().delete(persistentInstance);
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public Courseware findById(java.lang.Integer id) {

		log.debug("getting Courseware instance with id: " + id);
		try {
			Courseware instance = (Courseware) getHibernateTemplate().get(
					"com.erms.bean.Courseware", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(Courseware instance) {

		log.debug("finding Courseware instance by example");
		try {
			List results = getHibernateTemplate().findByExample(instance);
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findByProperty(String propertyName, Object value) {

		log.debug("finding Courseware instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from Courseware as model where model."
					+ propertyName + "= ?";
			return getHibernateTemplate().find(queryString, value);
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findAll() {

		log.debug("finding all Courseware instances");
		try {
			String queryString = "from Courseware";
			return getHibernateTemplate().find(queryString);
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

	public Courseware merge(Courseware detachedInstance) {

		log.debug("merging Courseware instance");
		try {
			Courseware result = (Courseware) getHibernateTemplate().merge(
					detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(Courseware instance) {

		log.debug("attaching dirty Courseware instance");
		try {
			getHibernateTemplate().saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(Courseware instance) {

		log.debug("attaching clean Courseware instance");
		try {
			getHibernateTemplate().lock(instance, LockMode.NONE);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public static CoursewareDAO getFromApplicationContext(ApplicationContext ctx) {

		return (CoursewareDAO) ctx.getBean("CoursewareDAO");
	}
}
